{"product_id":"carrier-tchc2550hecmrap602-transformer-h301d7","title":"OEM Carrier Transformer 460V→24V 75VA for TCHC2550HECMRAP602","description":"\u003ch1\u003eOEM Carrier Control Transformer 460V \/ 24V 75VA — HT01BD702 for Model TCHC2550HECMRAP602\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier replacement transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) factory-specified for the \u003cstrong\u003eCarrier TCHC2550HECMRAP602\u003c\/strong\u003e unit. The transformer steps down the 460V line voltage to 24V AC to power the low-voltage control circuit — thermostats, safety switches, relays, and the control board all depend on this component. When the transformer fails, the entire control circuit goes dark: the system will not respond to thermostat calls, contactors won't energize, and the unit appears completely dead despite line power being present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary Voltage: 460V AC | Secondary Voltage: 24V AC | Power Rating: 75 VA | Factory OEM part number HT01BD702 | Durable steel core with copper windings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic aftermarket transformers often deviate in secondary voltage output, risking nuisance trips, control board damage, or premature contactor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Work involves 460V primary wiring; always de-energize and lock out the unit before servicing. Tools needed: multimeter (verify 0V before touching terminals), wire strippers, screwdriver set, and wire nuts. Photograph all wiring before disconnecting. Professional installation strongly recommended for 460V systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \u0026amp; Shipping:\u003c\/strong\u003e Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Verified direct OEM replacement for Carrier model \u003cstrong\u003eTCHC2550HECMRAP602\u003c\/strong\u003e. Confirm primary supply voltage on the unit's data plate is 460V before ordering. Not for use on 208V or 230V primary applications unless otherwise specified. Our fitment team is available to verify compatibility before you purchase — contact us with your unit's full model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640274702707,"sku":"CARRIE-TCHC2550HECMRAP602-TRANSFORMER-HT01BD702","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640274735475,"sku":"CARRIE-TCHC2550HECMRAP602-TRANSFORMER-HT01BD702-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-blower-motor-ecm-HT01BD702_8a2a8f6f-ca1f-498b-a586-9971f267d633.jpg?v=1782942776","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc2550hecmrap602-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}